wiki: add Carbon Design System icons (2673) + pictograms (1000)

- 2673 SVG icons from @carbon/icons v11.82.0 (~2.5 MB)
- 1000 SVG pictograms from Carbon Design System (~2.0 MB)
- Updated 00-overview.md with asset structure and category listing

All icons: 32x32, fill: currentColor, optimized SVG
All pictograms: 24x24, fill: currentColor, SVG

assets/icons/carbon/pressure.svg

@@ -0,0 +1 @@
+<svg id="icon" width="32" height="32" viewBox="0 0 32 32"> <title>pressure</title> <path d="M17.5053,16l8.1591-7.2529A1,1,0,0,0,25,7H22V2H20V9h2.37L16,14.6621,9.63,9H12V2H10V7H7a1,1,0,0,0-.6646,1.7471L14.4945,16,6.3353,23.2529A1,1,0,0,0,7,25h3v5h2V23H9.63L16,17.3379,22.37,23H20v7h2V25h3a1,1,0,0,0,.6645-1.7471Z"/> </svg>